Metabolic rates of the antarctic amphipod Gondogeneia antarctica at different temperatures and salinities

Changes in environmental factors may deeply affect the energy budget of Antarctic organisms as many of them are stenothermal and/or stenohaline ectotherms. In this context, the aim of this study is to contribute to knowledge on variations in the energy demand of the Antarctic amphipod, Gondogeneia antarctica as a function of temperature and salinity. Experiments were held at the Brazilian Antarctic Station "Comandante Ferraz", under controlled conditions. Animals collected at Admiralty Bay were acclimated to temperatures of 0ºC; 2.5ºC and 5ºC and to salinities of 35, 30 and 25. Thirty measurements were made for each of the nine combinations of the three temperatures and three salinities, totalling 270 measurements. Metabolic rates were assessed by oxygen consumption and total nitrogenous ammonia excretion, in sealed respirometers. When acclimated to salinities 30 or 35, metabolic rates at 0ºC and 2.5ºC were very similar indicating a possible mechanism of metabolic compensation for temperature. At 5.0ºC, however, metabolic rates were always higher. Lower salinities enhanced the effects of temperature on metabolism and ammonia excretion rates. The physiological adaptations of individuals of G. antarctica suggest adaptive mechanisms for energy saving, adjusted to an environment with stable conditions of temperature and salinity. Little is known about the joint effects of salinity and temperature and this study is an important contribution to the understanding of the mechanism of polar organisms in their adaptation to both factors.Alterações ambientais podem modificar a alocação de energia dos organismos, principalmente dos ectotermos estenotérmicos e/ou estenohalinos. Nesse contexto, este trabalho contribui com o conhecimento da demanda de energia do anfípode antártico Gondogeneia antarctica em função da temperatura e da salinidade. Experimentos foram realizados na Estação Antártica Brasileira "Comandante Ferraz", em condições laboratoriais controladas. Animais coletados na Baía do Almirantado foram aclimatados a temperaturas de 0ºC; 2.5ºC e 5ºC e salinidades de 35, 30 and 25. Foram realizadas trinta medições para cada uma das nove combinações das três temperaturas com as três salinidades, totalizando 270 medições. As taxas metabólicas foram estimadas por meio do consumo de oxigênio e excreção de amônia, em câmaras respirométricas seladas. Quando aclimatados a salinidades 30 ou 35, as taxas metabólicas a 0ºC e 2.5ºC foram semelhantes indicando possível mecanismo de compensação térmica, nessa faixa de variação dos fatores. A 5.0ºC, no entanto, as taxas metabólicas foram sempre mais elevadas. Baixas salinidades potencializaram os efeitos da temperatura no consumo de oxigênio e na excreção de produtos nitrogenados. Os resultados estão relacionados a mecanismos adaptativos para economia de energia em indivíduos G. antarctica, ajustados a um ambiente que tem condições estáveis de temperatura e de salinidade. Pouco se sabe sobre os efeitos conjugados da salinidade e temperatura nos organismos e este trabalho é uma importante contribuição para esse conhecimento.CNPq-PROANTA

PHYSICAL INACTIVITY AND HIGH SEDENTARY BEHAVIOR ARE ASSOCIATED WITH HYPERTRIGLYCERIDEMIC WAIST IN ELDERLY

During aging, an increase in sedentary behaviour and a decrease in physical activity levels are observed. These factors may increase abdominal adiposity and triglyceride levels, which characterizes the hypertriglyceridemic waist (HW) phenotype, providing a high risk for cardiometabolic diseases. This study aimed to analyze the association between hypertriglyceridemic waist, physical activity level and sedentary behaviour in community-dwelling elderly. A population-based cross-sectional study was carried out, involving 316 elderlies (≥ 60 years) of both genders. The hypertriglyceridemic waist was diagnosed using high triglycerides (≥ 150 mg/dl) and increased waist circumference ≥ 88 and ≥ 102 cm values for women and men, respectively. The physical activity level and sedentary behaviour were evaluated using the IPAQ. The study included 173 women (54.7%) and 143 men (45.3%), with a mean age of 74.2 ± 9.8 years. The prevalence of HW was 27.1%, 47.7% insufficiently active and 24.1% high sedentary behaviour. The insufficiently active elderly (OR= 2.48; 95% CI: 1.31 - 4.71; p= 0.005) and with high sedentary behaviour (OR= 2.21; 95% CI: 1.04 - 4.32; p= 0.038) were associated positively with HW, indicating that elderly with insufficient physical activity levels and high sedentary behaviour showed themselves to approximately 2.5 and 2.2 times more likely to develop HW, respectively. Low physical activity level and high sedentary behaviour are associated with hypertriglyceridemic waist in community-dwelling elderly.

Insuficiência cardíaca: perfil epidemiológico da II macrorregião de saúde do estado de Rondônia entre os anos de 2011 a 2021: Heart failure: epidemiological profile of the II health macro-region of Rondônia state between the years 2011 and 2021

Insuficiência cardíaca (IC) e caracterizada como uma síndrome devido a um distúrbio cardíaco, dificultando a irrigação sanguínea para todo o organismo, ocasionando perda metabólica. Nisto o músculo cardíaco é incapaz de realizar a ejeção apropriada do sangue, e manter devidamente a pressão corpórea adequada. Objetivou em caracterizar o perfil epidemiológico dos pacientes hospitalizado por Insuficiência Cardíaca na II macrorregião de saúde do estado de Rondônia no ano de 2011 - 2021. Tratou-se de um estudo epidemiológico a partir de dados secundário entre os anos de 2011 a 2021 no site do Departamento de Informática do Sistema Único de Saúde (DATASUS), de domínio público no Brasil. OS resultados obtidos no período houve 11.504 internações, 1.308 óbitos, sendo que o ano que houve maior número de hospitalização foi 2011 com 1.278 (11,11%), sendo do sexo masculino 57%, da raça/cor parda 21, 69%, com a faixa etária de 70 a 79 anos 29, 42%. Pode-se concluir que houve uma diminuição da taxa de paciente hospitalizado por IC nos últimos anos tendo um percentual de 19,39% nos últimos 3 anos

Pesquisa em enfermagem: vivências de caminhos e possibilidades / Research in nursing: experiences of paths and possibilities

Objetivo: relatar a vivência de um grupo de docentes na organização de evento científico, visando estimular a pesquisa na graduação em enfermagem. Método: Trata-se de um relato da vivência docente em uma instituição particular de saúde no Rio de Janeiro, Brasil, entre os meses de julho e novembro de 2018, utilizando como estratégia a organização e realização de um evento científico. Resultados: a realização do II Simpósio dos Acadêmicos de Enfermagem oportunizou adquirir conhecimentos acerca das competências gerais necessárias ao processo de formação do estudante, por meio  do estudo e da prática, tendo a pesquisa como veículo facilitador  do processo de ensino- aprendizagem. Conclusão: A experiência de participar do Simpósio oportunizou aos participantes, crescimento acadêmico e profissional, compreendendo que, enquanto docentes podemos nos desafiar e criar novos desafios para os alunos, possibilitando oferecer mais uma forma de crescimento profissional e acadêmico. Estudantes de Enfermagem; Educação Superior; Práticas Interdisciplinares; Prática do Docente de Enfermagem; Educação Baseada em Competências

Neurostimulation Combined With Cognitive Intervention in Alzheimer’s Disease (NeuroAD): Study Protocol of Double-Blind, Randomized, Factorial Clinical Trial

Despite advances in the treatment of Alzheimer’s disease (AD), there is currently no prospect of a cure, and evidence shows that multifactorial interventions can benefit patients. A promising therapeutic alternative is the use of transcranial direct current stimulation (tDCS) simultaneously with cognitive intervention. The combination of these non-pharmacological techniques is apparently a safe and accessible approach. This study protocol aims to compare the efficacy of tDCS and cognitive intervention in a double-blind, randomized and factorial clinical trial. One hundred participants diagnosed with mild-stage AD will be randomized to receive both tDCS and cognitive intervention, tDCS, cognitive intervention, or placebo. The treatment will last 8 weeks, with a 12-month follow-up. The primary outcome will be the improvement of global cognitive functions, evaluated by the AD Assessment Scale, cognitive subscale (ADAS-Cog). The secondary outcomes will include measures of functional, affective, and behavioral components, as well as a neurophysiological marker (Brain-derived neurotrophic factor, BDNF). This study will enable us to assess, both in the short and long term, whether tDCS is more effective than the placebo and to examine the effects of combined therapy (tDCS and cognitive intervention) and isolated treatments (tDCS vs. cognitive intervention) on patients with AD.Clinical Trial Registration: www.ClinicalTrials.gov, identifier NCT02772185—May 5, 2016

A SARS-CoV-2 Negative Antigen Rapid Diagnostic in RT-qPCR Positive Samples Correlates With a Low Likelihood of Infectious Viruses in the Nasopharynx

Severe acute respiratory syndrome-related coronavirus (SARS-CoV-2) transmission occurs even among fully vaccinated individuals; thus, prompt identification of infected patients is central to control viral circulation. Antigen rapid diagnostic tests (Ag-RDTs) are highly specific, but sensitivity is variable. Discordant RT-qPCR vs. Ag-RDT results are reported, raising the question of whether negative Ag-RDT in positive RT-qPCR samples could imply the absence of infectious viruses. To study the relationship between negative Ag-RDT results with virological, molecular, and serological parameters, we selected a cross-sectional and a follow-up dataset and analyzed virus culture, subgenomic RNA quantification, and sequencing to determine infectious viruses and mutations. We demonstrated that RT-qPCR positive while SARS-CoV-2 Ag-RDT negative discordant results correlate with the absence of infectious virus in nasopharyngeal samples. A decrease in sgRNA detection together with an expected increase in detectable anti-S and anti-N IgGs was also verified in these samples. The data clearly demonstrate that a negative Ag-RDT sample is less likely to harbor infectious SARS-CoV-2 and, consequently, has a lower transmissible potential

PHYSICAL INACTIVITY AND HIGH SEDENTARY BEHAVIOR ARE ASSOCIATED WITH HYPERTRIGLYCERIDEMIC WAIST IN ELDERLY

During aging, an increase in sedentary behaviour and a decrease in physical activity levels are observed. These factors may increase abdominal adiposity and triglyceride levels, which characterizes the hypertriglyceridemic waist (HW) phenotype, providing a high risk for cardiometabolic diseases. This study aimed to analyze the association between hypertriglyceridemic waist, physical activity level and sedentary behaviour in community-dwelling elderly. A population-based cross-sectional study was carried out, involving 316 elderlies (≥ 60 years) of both genders. The hypertriglyceridemic waist was diagnosed using high triglycerides (≥ 150 mg/dl) and increased waist circumference ≥ 88 and ≥ 102 cm values for women and men, respectively. The physical activity level and sedentary behaviour were evaluated using the IPAQ. The study included 173 women (54.7%) and 143 men (45.3%), with a mean age of 74.2 ± 9.8 years. The prevalence of HW was 27.1%, 47.7% insufficiently active and 24.1% high sedentary behaviour. The insufficiently active elderly (OR= 2.48; 95% CI: 1.31 - 4.71; p= 0.005) and with high sedentary behaviour (OR= 2.21; 95% CI: 1.04 - 4.32; p= 0.038) were associated positively with HW, indicating that elderly with insufficient physical activity levels and high sedentary behaviour showed themselves to approximately 2.5 and 2.2 times more likely to develop HW, respectively. Low physical activity level and high sedentary behaviour are associated with hypertriglyceridemic waist in community-dwelling elderly.

OXYGEN CONSUMPTION AND AMMONIA EXCRETION OF THE ANTARCTIC AMPHIPOD Bovallia gigantea PFEFFER, 1888, AT DIFFERENT TEMPERATURES AND SALINITIES

The energy budget of Antarctic stenothermic and/or stenohaline ectotherms is modulated by variations of temperature and salinity. The joint effects of these latter on polar organisms have been but little studied. Data on this subject are of great importance for an understanding of the energy demand of Antarctic animals such as amphipods, especially when considering their ecological importance and the possible impacts of global changes. Experiments were carried out at the Brazilian Antarctic Station "Comandante Ferraz" under controlled conditions. Specimens of Bovallia gigantea were collected in Admiralty Bay and acclimated to temperatures of 0ºC; 2.5ºC and 5ºC and to salinities of 35, 30 and 25. Thirty measurements were taken for each of the nine possible combinations of the three temperatures and the three salinities. Metabolic rates were assessed based on oxygen consumption and total ammonia nitrogenous excretion in sealed respirometers. At 0ºC and 2.5ºC, the metabolic rates of the animals that were acclimated to salinities of 30 or 35 were similar, indicating a possible mechanism of metabolic independence of temperature. However, the metabolic rates were always higher at 5.0ºC. The effects of temperature on oxygen consumption and on ammonia excretion rates were intensified by lower salinities. Individuals of B gigantea have a temperature-independent metabolic rate within a narrow temperature window that can be modified in accordance with salinity

TELEGRAM: contribuição na indicação de tecnologia assistiva para indivíduos com deficiência auditiva

RESUMO Objetivo O objetivo do estudo foi traduzir e adaptar culturalmente para a Língua Portuguesa Brasileira o instrumento TELEGRAM e avaliar sua aplicabilidade em adultos com deficiência auditiva usuários de Aparelho de Amplificação Sonora Individual. Método Foram realizadas a tradução do TELEGRAM para o idioma Português, a revisão das equivalências gramatical e idiomática (traduções reversas) e as adaptações linguística e cultural. Após a tradução, o TELEGRAM foi aplicado em 20 indivíduos adultos com deficiência auditiva. Resultados Foi realizada análise descritiva dos resultados. Após a equivalência gramatical e idiomática foi sugerida substituição de um termo/item, tendo sido o mesmo modificado e compatibilizado ao contexto brasileiro. De modo geral, as perguntas do questionário foram consideradas de fácil entendimento. Dentre as categorias avaliadas, os indivíduos com deficiência auditiva apresentaram maior dificuldade quanto ao uso do telefone e em atividades como participar de eventos em igrejas, festas, ou seja, em situações de ruído, distância e reverberação. Conclusão O TELEGRAM traduzido para a Língua Portuguesa Brasileira mostrou ser uma ferramenta de fácil aplicação na população estudada e efetivo para avaliar quais são as principais situações em que indivíduos com deficiência auditiva apresentam maior dificuldade de comunicação, reforçando a importância da reabilitação auditiva e das tecnologias assistivas para minimizar essas dificuldades